from django.shortcuts import render,redirect,reverse
from django.views import View
from django import http
import re
from .models import User
from django.db import DatabaseError
from django.contrib.auth import login
# from django.http import HttpResponse
# Create your views here.
class RegisterView(View):
    def get(self,request):
        return render(request,'register.html')
    def post(self,request):
        username=request.POST.get('username')
        password = request.POST.get('password')
        password2 = request.POST.get('password2')
        mobile = request.POST.get('mobile')
        allow = request.POST.get('allow')

        # 判断参数是否齐全
        if not all([username, password, password2, mobile, allow]):
            return http.HttpResponseForbidden('缺少必传参数')

        # 判断用户名是否是5-20个字符
        if not re.match(r'^[a-zA-Z0-9_-]{5,20}$', username):
            return http.HttpResponseForbidden('请输入5-20个字符的用户名')
        # 判断密码是否是8-20个数字
        if not re.match(r'^[0-9A-Za-z]{8,20}$', password):
            return http.HttpResponseForbidden('请输入8-20位的密码')
        # 判断两次密码是否一致
        if password != password2:
            return http.HttpResponseForbidden('两次输入的密码不一致')
        # 判断手机号是否合法
        if not re.match(r'^1[3-9]\d{9}$', mobile):
            return http.HttpResponseForbidden('请输入正确的手机号码')
        # 判断是否勾选用户协议
        if allow != 'on':
            return http.HttpResponseForbidden('请勾选用户协议')

        try:
            user=User.objects.create_user(username=username, password=password, mobile=mobile)
        except DatabaseError:
            return render(request, 'register.html', {'register_errmsg': '注册失败'})

        login(request, user)  # user来自于以上代码中创建的用户user
        # return http.HttpResponse('注册成功，重定向到首页')
        return redirect(reverse('contents:index'))